Research on Crystallization Kinetics of Calcium Sulfate Dihydrate Prepared by Bittern under 20°C and 120r/min Condition

Bi Jun Luo; Hai Hong Wu; Yu Qi Wang; Qi Zhang

doi:10.4028/www.scientific.net/AMR.926-930.210

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Research on Crystallization Kinetics of Calcium Sulfate Dihydrate Prepared by Bittern under 20°C and 120r/min Condition

Abstract:

Crystallization kinetics experiment of calcium sulfate dehydrates, which is prepared by bittern under 20°C and 120r/min conditions, is carried out. According to the results of the experimental data, nucleation density n⁰ of gypsum crystals is proportional to the residence time, and the rate of crystal growth line G is inversely proportional to the residence time. Meanwhile, the crystallization kinetics formula is derived to be: B⁰ = 5.78×10²G^0.87.